449er

Can you charge/maintain a battery through the cigarette lighter on a dry sump trunk mounted battery? Thanks

Patsgarage

You could probably maintain the charge that way, but not recharge a flat battery. I just pop the hatch and run the cord out the back.

Mike Green9

Cigar lighter works great for a battery tender, but as stated above, NOT to CHARGE a battery. A tender will put out .7 to 3 amps which is safe for a car's electrical wiring.

Battery chargers should be connected directly to the battery, with the battery cables disconnected so as not to damage the BCM. (Disconnect the negative terminal first.)

Whenever I use a battery tender, I always use the lowest setting. That is easiest on the battery. It takes longer, so I plan ahead.

M...

windyC6

Interesting. Every since we went to the BCM autos so many years ago I must have put a charger on at least 30 different vehicles without ever disconnecting the batt and never had an issue with blowing one out.

RobLo

Years of charging the Vette and Harleys using a BT and never disconnected the battery, just plug it in when I get home and unplug it when I go out...

Mike Green9

Re disconnecting battery while using a battery charger in a modern day car - I stand corrected.
Guess I was just being overly cautious.
M...